Brandywine Realty Trust

                           2,000,000 Common Shares(1)
                             of Beneficial Interest
                                ($.01 par value)

                             Underwriting Agreement


                                                              New York, New York
                                                                   June 13, 2003




Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

         Brandywine Realty Trust, a real estate investment trust organized under
the laws of the State of Maryland (the "Company"), proposes to sell to you (the
"Underwriter"), 2,000,000 common shares of beneficial interest, par value $.01
per share (the "Common Shares") of the Company, (said shares to be issued and
sold by the Company being hereinafter called the "Underwritten Securities"). The
Company also proposes to grant to the Underwriter an option to purchase up to
300,000 shares of Common Shares to cover over-allotments (the "Option
Securities"; the Option Securities, together with the Underwritten Securities,
being hereinafter called the "Securities"). The use of the neuter in this
Agreement shall include the feminine and masculine wherever appropriate. Any
reference herein to the Registration Statement, a Preliminary Prospectus or the
Prospectus shall be deemed to refer to and include the documents incorporated by
reference therein pursuant to Item 12 of Form S-3 which were filed under the
Exchange Act (as defined herein) on or before the Effective Date (as defined
herein) of the Registration Statement or the issue date of such Preliminary
Prospectus or the Prospectus, as the case may be; and any reference herein to
the terms "amend", "amendment" or "supplement" with respect to the Registration
Statement, any Preliminary Prospectus or the Prospectus shall be deemed to refer
to and include the filing of any document under the Exchange Act after the
Effective Date of the Registration Statement, or the issue date of any
Preliminary Prospectus or the Prospectus, as the case may be, deemed to be
incorporated therein by reference. Certain terms used herein are defined in
Section 16 hereof.

- ------------------------
(1)  Plus an option to purchase from the Company up to 300,000 additional
     Securities to cover over-allotments.





         The Company, directly and through a wholly-owned subsidiary, is the
sole general partner and a limited partner of Brandywine Operating Partnership,
L.P., a Delaware limited partnership (the "Operating Partnership"). The Company
owns its assets and conducts its operations through the Operating Partnership
and through subsidiaries of the Operating Partnership. As of March 31, 2003, the
Company's ownership interest in the Operating Partnership entitled the Company
to approximately 95.2% of the Operating Partnership's distributions after
distributions by the Operating Partnership holders of its preferred units. The
Company will contribute the net proceeds of the sale of the Securities to the
Operating Partnership in exchange for additional partnership interests in the
Operating Partnership. The Company and the Operating Partnership wish to confirm
as follows their agreement with you, in connection with the purchase of the
Securities by the Underwriter.

         1. Representations and Warranties. The Company and the Operating
Partnership jointly and severally represent and warrant to, and agree with, the
Underwriter as set forth below in this Section 1.

         (a) The Company meets the requirements for use of Form S-3 under the
     Act (as defined herein) and has prepared and filed with the Commission (as
     defined herein) a registration statement (file number 333-56237) on Form
     S-3, including a related preliminary prospectus, for registration under the
     Act of the offering and sale of the Securities. The Company may have filed
     one or more amendments thereto, including a related preliminary prospectus,
     each of which has previously been furnished to you. The Company will next
     file with the Commission one of the following: either (i) prior to the
     Effective Date of such registration statement, a further amendment to such
     registration statement, (including the form of final prospectus) or (ii)
     after the Effective Date of such registration statement, a final prospectus
     in accordance with Rules 430A and 424(b). In the case of clause (ii), the
     Company has included in such registration statement, as amended at the
     Effective Date, all information (other than Rule 430A Information (as
     defined herein)) required by the Act and the rules thereunder to be
     included in such registration statement and the Prospectus. As filed, such
     amendment and form of final prospectus, or such final prospectus, shall
     contain all Rule 430A Information, together with all other such required
     information, and, except to the extent the Underwriter shall agree in
     writing to a modification, shall be in all substantive respects in the form
     furnished to you prior to the Execution Time (as defined herein) or, to the
     extent not completed at the Execution Time, shall contain only such
     specific additional information and other changes (beyond that contained in
     the latest Preliminary Prospectus) as the Company has advised you, prior to
     the Execution Time, will be included or made therein.

         (b) On the Effective Date, the Registration Statement did or will, and
     when the Prospectus is first filed (if required) in accordance with Rule
     424(b) and on the Closing Date (as defined herein) and on any date on which
     Option Securities are purchased, if such date is not the Closing Date (a
     "settlement date"), the Prospectus (and any supplements thereto) will,
     comply in all material respects with the applicable requirements of the Act
     and the Exchange Act and the respective rules thereunder; on the Effective
     Date and at the Execution Time, the Registration Statement did not or will
     not contain any untrue statement of a material fact or omit to state any


                                       2


     material fact required to be stated therein or necessary in order to make
     the statements therein not misleading; and, on the Effective Date, the
     Prospectus, if not filed pursuant to Rule 424(b), did not or will not, and
     on the date of any filing pursuant to Rule 424(b) and on the Closing Date
     and any settlement date, the Prospectus (together with any supplement
     thereto) did not or will not, include any untrue statement of a material
     fact or omit to state a material fact necessary in order to make the
     statements therein, in the light of the circumstances under which they were
     made, not misleading; provided, however, that the Company and the Operating
     Partnership make no representations or warranties as to the information
     contained in or omitted from the Registration Statement or the Prospectus
     (or any supplement thereto) in reliance upon and in conformity with
     information furnished in writing to the Company by the Underwriter
     specifically for inclusion in the Registration Statement or the Prospectus
     (or any supplement thereto).

         (c) The Company is a real estate investment trust duly formed and
     validly existing and in good standing under the laws of the jurisdiction in
     which it is chartered or organized, with full trust power and authority to
     own or lease, as the case may be, and to operate its properties and conduct
     its business as described in the Prospectus, and is duly qualified to do
     business as a foreign trust and is in good standing under the laws of each
     jurisdiction which requires such qualification.

         (d) Each of the subsidiaries of the Company, including the Operating
     Partnership (collectively the "Subsidiaries"), is a corporation, trust,
     limited partnership, limited liability company or general partnership duly
     incorporated or formed, as the case may be, validly existing and in good
     standing under the laws of the jurisdiction in which it is chartered,
     formed or organized with full corporate, trust, limited liability company
     or partnership power and authority, to own or lease, as the case may be,
     and operate its properties, and to conduct its business as described in the
     Prospectus, and is duly qualified to do business and is in good standing
     under the laws of each jurisdiction which requires such qualification.

         (e) All the outstanding shares of capital stock, beneficial interests,
     limited liability company interests or partnership interests of each
     Subsidiary have been duly and validly authorized and issued and are fully
     paid and nonassessable, and, except as otherwise set forth in the
     Prospectus or on Schedule I attached hereto, all outstanding shares of
     capital stock, shares of beneficial interest, limited liability company
     interests or partnership interests of the Subsidiaries are owned by the
     Company either directly or through wholly owned subsidiaries free and clear
     of any perfected security interest or any other security interests, claims,
     liens or encumbrances. The Company's percentage interest and ownership in
     the Operating Partnership, and the Operating Partnership's percentage


                                       3


     interest and ownership in each of the Subsidiaries, is as set forth on
     Schedule I. Except in respect of the Operating Partnership and as set forth
     in the Prospectus, or on Schedule II attached hereto, no options, warrants
     or other rights to purchase, agreements or obligations to issue, or rights
     to convert any obligations into or exchange any securities for, shares of
     capital stock of or ownership interest in any Subsidiary are outstanding.
     The Company is the sole general partner of the Operating Partnership. The
     Subsidiaries set forth on Schedule I include all of the "significant
     subsidiaries" of the Company, as such term is defined by Rule 1-02 of
     Regulation S-X.

         (f) The Company's authorized equity capitalization is as set forth in
     the Prospectus; the Common Shares conform in all material respects to the
     description thereof contained in the Prospectus; the outstanding Common
     Shares have been duly and validly authorized and issued and are fully paid
     and nonassessable; the Securities being sold hereunder by the Company have
     been duly and validly authorized, and, when issued and delivered to and
     paid for by the Underwriter pursuant to this Agreement, will be fully paid
     and nonassessable; the certificates for the Securities are in valid and
     sufficient form; the holders of outstanding shares of beneficial interest
     of the Company are not entitled to preemptive or other rights to subscribe
     for the Securities and, except as set forth in the Prospectus, no options,
     warrants or other rights to purchase, agreements or other obligations to
     issue, or rights to convert any obligations into or exchange any securities
     for, shares of beneficial interest or ownership interests in the Company
     are outstanding.

         (g) There is no franchise, contract or other document of a character
     required to be described in the Registration Statement or Prospectus, or to
     be filed as an exhibit thereto, which is not described or filed as
     required; and the statements in the Prospectus under the headings
     "Description of shares of Beneficial Interest," "Certain Provisions of
     Maryland Law and our Declaration of Trust and Bylaws," "Federal Income Tax
     Considerations" and "Risk Factors - Our Status as a REIT is dependent on
     compliance with federal income tax requirements," insofar as such
     statements summarize legal matters, agreements, documents or proceedings
     discussed therein, are accurate and fair summaries of such legal matters,
     agreements, documents or proceedings.

         (h) This Agreement has been duly authorized, executed and delivered by
     the Company and the Operating Partnership.

         (i) The Company is not and, after giving effect to the offering and
     sale of the Securities and the application of the proceeds thereof as
     described in the Prospectus, will not be an "investment company" as defined
     in the Investment Company Act of 1940, as amended.


                                       4


         (j) No consent, approval, authorization, filing with or order of any
     court or governmental agency or body is required in connection with the
     transactions contemplated herein, except such as have been obtained under
     the Act and such as may be required under the blue sky laws of any
     jurisdiction in connection with the purchase and distribution of the
     Securities by the Underwriter in the manner contemplated herein and in the
     Prospectus.

         (k) Neither the issue and sale of the Securities nor the consummation
     of any other of the transactions herein contemplated nor the fulfillment of
     the terms hereof will conflict with, result in a breach or violation of, or
     imposition of any lien, charge or encumbrance upon any property or assets
     of the Company or any of the Subsidiaries pursuant to (i) the Declaration
     of Trust, charter or by-laws, partnership agreements, operating agreements
     or other organizational documents of the Company or any of the
     Subsidiaries, (ii) the terms of any indenture, contract, lease, mortgage,
     deed of trust, note agreement, loan agreement or other agreement,
     obligation, condition, covenant or instrument to which the Company or any
     of the Subsidiaries is a party or bound or to which its or their property
     is subject, or (iii) any statute, law, rule, regulation, judgment, order or
     decree applicable to the Company or any of its Subsidiaries of any court,
     regulatory body, administrative agency, governmental body, arbitrator or
     other authority having jurisdiction over the Company or any of its
     Subsidiaries or any of its or their properties.

         (l) No holders of securities of the Company have rights to the
     registration of such securities under the Registration Statement.

         (m) The consolidated historical financial statements and schedules of
     the Company and its consolidated subsidiaries included in the Prospectus
     and the Registration Statement present fairly in all material respects the
     financial condition, results of operations and cash flows of the Company as
     of the dates and for the periods indicated, comply as to form with the
     applicable accounting requirements of the Act and have been prepared in
     conformity with generally accepted accounting principles applied on a
     consistent basis throughout the periods involved (except as otherwise noted
     therein). The selected financial data set forth under the caption "Selected
     Financial Information" in the Prospectus and Registration Statement fairly
     present, on the basis stated in the Prospectus and the Registration
     Statement, the information included therein.

         (n) No action, suit or proceeding by or before any court or
     governmental agency, authority or body or any arbitrator involving the
     Company, the Operating Partnership or any of the other Subsidiaries, or any
     of their respective partners, directors, trustees or officers in their
     capacity as such, or to which the Company, the Operating Partnership or any
     of the other Subsidiaries or its or their property is pending or, to the
     best knowledge of the Company and the Operating Partnership, threatened


                                       5


     that (i) could reasonably be expected to have a material adverse effect on
     the performance of this Agreement or the consummation of any of the
     transactions contemplated hereby or (ii) could reasonably be expected to
     have a material adverse effect on the condition (financial or otherwise),
     prospects, earnings, business or properties of the Company and the
     Subsidiaries, taken as a whole, whether or not arising from transactions in
     the ordinary course of business, except as set forth in or contemplated in
     the Prospectus (exclusive of any supplement thereto). There are no
     agreements, contracts, indentures, leases or other instruments that are
     required to be described in the Registration Statement or the Prospectus or
     to be filed as an exhibit to the Registration Statement that are not
     described or filed as required by the Act.

         (o) Each of the Company, the Operating Partnership and the Subsidiaries
     owns or leases all such properties as are necessary to the conduct of its
     operations as presently conducted. Each of the Company and the Operating
     Partnership (either directly or through a Subsidiary) has, and after giving
     effect to the transactions described in the Registration Statement and
     Prospectus will have, good and marketable and insurable title to all real
     property described in, or that secure indebtedness identified in, the
     Prospectus as being or to be owned by it, free and clear of all liens,
     claims, security interests or other encumbrances except such as are
     described in the Registration Statement and the Prospectus or in a document
     filed as an exhibit to, or incorporated by reference in, the Registration
     Statement and except those which do not and will not have a material
     adverse effect on the condition (financial or other), business, prospects,
     properties, net worth or results of operations of the Company and the
     Subsidiaries taken as a whole. All the property described in the Prospectus
     as being held under lease by each of the Company and the Subsidiaries is
     held by it under valid, subsisting and enforceable leases, other than those
     described in the Registration Statement and the Prospectus and those which
     do not and will not have a material adverse effect on the condition
     (financial or other), business, prospects, properties, net worth or results
     of operations of the Company and the Subsidiaries taken as a whole.

         (p) Neither the Company nor any Subsidiary is in violation or default
     of (i) any provision of its Declaration of Trust, charter or bylaws,
     partnership agreement, limited liability company agreement or other
     organizational documents, as applicable, (ii) the terms of any indenture,
     contract, lease, mortgage, deed of trust, note agreement, loan agreement or
     other agreement, obligation, condition, covenant or instrument to which it
     is a party or bound or to which its property is subject, or (iii) any
     statute, law, rule, regulation, judgment, order or decree of any court,
     regulatory body, administrative agency, governmental body, arbitrator or
     other authority having jurisdiction over the Company or such subsidiary or
     any of its properties, as applicable.


                                       6


         (q) KPMG LLP, who has audited certain financial statements of the
     Company and its consolidated subsidiaries and delivered their report with
     respect to the audited consolidated financial statements and schedules
     included in the Prospectus, are independent public accountants with respect
     to the Company within the meaning of the Act and the applicable published
     rules and regulations thereunder.

         (r) There are no transfer taxes or other similar fees or charges under
     Federal law or the laws of any state, or any political subdivision thereof,
     required to be paid in connection with the execution and delivery of this
     Agreement or the issuance by the Company or sale by the Company of the
     Securities.

         (s) The Company has filed all foreign, federal, state and local tax
     returns that are required to be filed or has requested extensions thereof
     (except in any case in which the failure so to file would not have a
     material adverse effect on the condition (financial or otherwise),
     prospects, earnings, business or properties of the Company and the
     Subsidiaries, taken as a whole, whether or not arising from transactions in
     the ordinary course of business, except as set forth in or contemplated in
     the Prospectus (exclusive of any supplement thereto) and has paid all taxes
     required to be paid by it and any other assessment, fine or penalty levied
     against it, to the extent that any of the foregoing is due and payable,
     except for any such assessment, fine or penalty that is currently being
     contested in good faith or as would not have a material adverse effect on
     the condition (financial or otherwise), prospects, earnings, business or
     properties of the Company and the Subsidiaries, taken as a whole, whether
     or not arising from transactions in the ordinary course of business, except
     as set forth in or contemplated in the Prospectus (exclusive of any
     supplement thereto). The Company and the Subsidiaries are organized and
     operate in the manner described in the Registration Statement so that the
     Company meets the requirements for qualification as a real estate
     investment trust under Sections 856 through 860 of the Internal Revenue
     Code of 1986, as amended (the "Code"), and the rules and regulations
     thereunder as currently in effect. Each Subsidiary, including without
     limitation, the Operating Partnership, that is a partnership or limited
     liability company will be treated as a partnership, and not as an
     association taxable as a corporation or a publicly traded partnership, for
     federal income tax purposes.

         (t) No labor problem or dispute with the employees of the Company or
     any of the Subsidiaries exists or is threatened or imminent, and the
     Company is not aware of any existing or imminent labor disturbance by the
     employees of any of its or its Subsidiaries' principal suppliers,
     contractors or customers, that could have a material adverse effect on the
     condition (financial or otherwise), prospects, earnings, business or
     properties of the Company and the Subsidiaries, taken as a whole, whether
     or not arising from transactions in the ordinary course of business, except
     as set forth in or contemplated in the Prospectus (exclusive of any


                                       7


     supplement thereto) and has paid all taxes required to be paid by it and
     any other assessment, fine or penalty levied against it, to the extent that
     any of the foregoing is due and payable, except for any such assessment,
     fine or penalty that is currently being contested in good faith or as would
     not have a material adverse effect on the condition (financial or
     otherwise), prospects, earnings, business or properties of the Company and
     the Subsidiaries, taken as a whole, whether or not arising from
     transactions in the ordinary course of business, except as set forth in or
     contemplated in the Prospectus (exclusive of any supplement thereto).

         (u) The Company and each of the Subsidiaries are insured by insurers of
     recognized financial responsibility against such losses and risks and in
     such amounts as are prudent and customary in the businesses in which they
     are engaged; all policies of insurance insuring the Company or any of the
     Subsidiaries or their respective businesses, assets, employees, officers
     and directors are in full force and effect; the Company and the
     Subsidiaries are in compliance with the terms of such policies and
     instruments in all material respects; and there are no claims by the
     Company or any of the Subsidiaries under any such policy or instrument as
     to which any insurance company is denying liability or defending under a
     reservation of rights clause; neither the Company nor any such Subsidiary
     has been refused any insurance coverage sought or applied for; and neither
     the Company nor any such Subsidiary has any reason to believe that it will
     not be able to renew its existing insurance coverage as and when such
     coverage expires or to obtain similar coverage from similar insurers as may
     be necessary to continue its business at a cost that would not have a
     material adverse effect on the condition (financial or otherwise),
     prospects, earnings, business or properties of the Company and the
     Subsidiaries, taken as a whole, whether or not arising from transactions in
     the ordinary course of business, except as set forth in or contemplated in
     the Prospectus (exclusive of any supplement thereto).

         (v) No consolidated Subsidiary is currently prohibited, directly or
     indirectly, from paying any dividends to the Company, from making any other
     distribution on such Subsidiary's capital stock or other equity, from
     repaying to the Company any loans or advances to such Subsidiary from the
     Company or from transferring any of such Subsidiary's property or assets to
     the Company or any other Subsidiary of the Company, except as described in
     or contemplated by the Prospectus (exclusive of any supplement thereto) and
     except that the Subsidiaries that are identified as "Joint Ventures" on
     Schedule I require the consent of the joint venture partners listed on
     Schedule I as a condition to making such payments or transfers and except
     that following an event of default under the loan documents encumbering the
     properties owned by a Subsidiary such Subsidiary may be prohibited from
     making distributions to the Company.

         (w) The Company and the Subsidiaries possess all licenses,
     certificates, permits and other authorizations issued by the appropriate
     federal, state or foreign regulatory authorities necessary to conduct their


                                       8


     respective businesses, and neither the Company nor any such Subsidiary has
     received any notice of proceedings relating to the revocation or
     modification of any such certificate, authorization or permit which, singly
     or in the aggregate, if the subject of an unfavorable decision, ruling or
     finding, would have a material adverse effect on the condition (financial
     or otherwise), prospects, earnings, business or properties of the Company
     and the Subsidiaries, taken as a whole, whether or not arising from
     transactions in the ordinary course of business, except as set forth in or
     contemplated in the Prospectus (exclusive of any supplement thereto).

         (x) The Company and each of the Subsidiaries maintain a system of
     internal accounting controls sufficient to provide reasonable assurance
     that (i) transactions are executed in accordance with management's general
     or specific authorizations; (ii) transactions are recorded as necessary to
     permit preparation of financial statements in conformity with generally
     accepted accounting principles and to maintain asset accountability; (iii)
     access to assets is permitted only in accordance with management's general
     or specific authorization; and (iv) the recorded accountability for assets
     is compared with the existing assets at reasonable intervals and
     appropriate action is taken with respect to any differences.

         (y) The Company has not taken, directly or indirectly, any action
     designed to or that would constitute or that might reasonably be expected
     to cause or result in, under the Exchange Act or otherwise, stabilization
     or manipulation of the price of any security of the Company to facilitate
     the sale or resale of the Securities.

         (z) (i) The Company and the Subsidiaries are (A) in compliance with any
     and all applicable foreign, federal, state and local laws and regulations
     relating to the protection of human health and safety, the environment or
     hazardous or toxic substances or wastes, pollutants or contaminants
     ("Environmental Laws"), (B) have received and are in compliance with all
     permits, licenses or other approvals required of them under applicable
     Environmental Laws to conduct their respective businesses and (C) have not
     received notice of any actual or potential liability under any
     environmental law, except where such non-compliance with Environmental
     Laws, failure to receive required permits, licenses or other approvals, or
     liability would not, individually or in the aggregate, have a material
     adverse change in the condition (financial or otherwise), prospects,
     earnings, business or properties of the Company and the Subsidiaries, taken
     as a whole, whether or not arising from transactions in the ordinary course
     of business, except as set forth in or contemplated in the Prospectus
     (exclusive of any supplement thereto). Except as set forth in the
     Prospectus, neither the Company nor any of the subsidiaries has been named
     as a "potentially responsible party" under the Comprehensive Environmental
     Response, Compensation, and Liability Act of 1980, as amended.


                                       9


             (ii) In the ordinary course of its business, the Company
         periodically reviews the effect of Environmental Laws on the business,
         operations and properties of the Company and the Subsidiaries, in the
         course of which it identifies and evaluates associated costs and
         liabilities (including, without limitation, any capital or operating
         expenditures required for clean-up, closure of properties or compliance
         with Environmental Laws, or any permit, license or approval, any
         related constraints on operating activities and any potential
         liabilities to third parties). On the basis of such review, the Company
         has reasonably concluded that such associated costs and liabilities
         would not, singly or in the aggregate, have a material adverse effect
         on the condition (financial or otherwise), prospects, earnings,
         business or properties of the Company and the Subsidiaries, taken as a
         whole, whether or not arising from transactions in the ordinary course
         of business, except as set forth in or contemplated in the Prospectus
         (exclusive of any supplement thereto).

         (aa) The minimum funding standard under Section 302 of the Employee
     Retirement Income Security Act of 1974, as amended, and the regulations and
     published interpretations thereunder ("ERISA"), has been satisfied by each
     "pension plan" (as defined in Section 3(2) of ERISA) which has been
     established or maintained by the Company and/or one or more of its
     subsidiaries, and the trust forming part of each such plan which is
     intended to be qualified under Section 401 of the Code is so qualified;
     each of the Company and its subsidiaries has fulfilled its obligations, if
     any, under Section 515 of ERISA; neither the Company nor any of its
     subsidiaries maintains or is required to contribute to a "welfare plan" (as
     defined in Section 3(1) of ERISA) which provides retiree or other
     post-employment welfare benefits or insurance coverage (other than
     "continuation coverage" (as defined in Section 602 of ERISA)); each pension
     plan and welfare plan established or maintained by the Company and/or one
     or more of its subsidiaries is in compliance in all material respects with
     the currently applicable provisions of ERISA; and neither the Company nor
     any of its subsidiaries has incurred or could reasonably be expected to
     incur any withdrawal liability under Section 4201 of ERISA, any liability
     under Section 4062, 4063, or 4064 of ERISA, or any other liability under
     Title IV of ERISA. The assets of the Company and the Subsidiaries do not,
     and as of the Closing Date will not, constitute "plan assets" under ERISA.

         (bb) There is and has been no failure on the part of the Company and
     any of the Company's directors or officers, in their capacities as such, to
     comply with any provision of the Sarbanes Oxley Act of 2002 and the rules
     and regulations promulgated in connection therewith (the "Sarbanes Oxley
     Act"), including Section 402 related to loans and Sections 302 and 906
     related to certifications.


                                       10


         (cc) Neither the Company nor any of the Subsidiaries nor, to the
     knowledge of the Company and the Operating Partnership, any director,
     trustee, officer, agent, employee or affiliate of the Company or any of the
     Subsidiaries is aware of or has taken any action, directly or indirectly,
     that would result in a violation by such Persons of the FCPA, including,
     without limitation, making use of the mails or any means or instrumentality
     of interstate commerce corruptly in furtherance of an offer, payment,
     promise to pay or authorization of the payment of any money, or other
     property, gift, promise to give, or authorization of the giving of anything
     of value to any "foreign official" (as such term is defined in the FCPA) or
     any foreign political party or official thereof or any candidate for
     foreign political office, in contravention of the FCPA and the Company, its
     subsidiaries and, to the knowledge of the Company, its affiliates have
     conducted their businesses in compliance with the FCPA and have instituted
     and maintain policies and procedures designed to ensure, and which are
     reasonably expected to continue to ensure, continued compliance therewith.

         "FCPA" means Foreign Corrupt Practices Act of 1977, as amended, and the
     rules and regulations thereunder.

         (dd) The operations of the Company and the Subsidiaries are and have
     been conducted at all times in compliance with applicable financial
     recordkeeping and reporting requirements of the Currency and Foreign
     Transactions Reporting Act of 1970, as amended, the money laundering
     statutes of all jurisdictions, the rules and regulations thereunder and any
     related or similar rules, regulations or guidelines, issued, administered
     or enforced by any governmental agency (collectively, the "Money Laundering
     Laws") and no action, suit or proceeding by or before any court or
     governmental agency, authority or body or any arbitrator involving the
     Company or any of its subsidiaries with respect to the Money Laundering
     Laws is pending or, to the best knowledge of the Company, threatened.

         (ee) Neither the Company nor any of the Subsidiaries nor, to the
     knowledge of the Company, any director, trustee, officer, agent, employee
     or affiliate of the Company or any of its subsidiaries is currently subject
     to any U.S. sanctions administered by the Office of Foreign Assets Control
     of the U.S. Treasury Department ("OFAC"); and the Company will not directly
     or indirectly use the proceeds of the offering, or lend, contribute or
     otherwise make available such proceeds to any subsidiary, joint venture
     partner or other person or entity, for the purpose of financing the
     activities of any person currently subject to any U.S. sanctions
     administered by OFAC.


                                       11


         (ff) The Company and its Subsidiaries are organized and operate in a
     manner so as to enable the Company to qualify as a real estate investment
     trust (a "REIT") under Sections 856 through 860 of the Code and the rules
     and regulations thereunder as currently in effect, and the Company has
     elected to be taxed as a REIT under the Code commencing with the taxable
     year ending December 31, 1986. The Company intends to continue to qualify
     as a REIT for the foreseeable future.

         (gg) The Registration Statement was exempt from filing with the
     National Association of Securities Dealers, Inc. pursuant to, and in full
     compliance with, Conduct Rule 2710(b)(7)(C).

         Any certificate signed by any officer of the Company and delivered to
the Underwriter in connection with the offering of the Securities shall be
deemed a representation and warranty by the Company and by the Operating
Partnership, as to matters covered thereby, to the Underwriter.

         2. Purchase and Sale. (a) Subject to the terms and conditions and in
reliance upon the representations and warranties herein set forth, the Company
agrees to sell to the Underwriter, and the Underwriter agrees to purchase from
the Company, at a purchase price of $23.60 per share, the Underwritten
Securities.

         (b) Subject to the terms and conditions and in reliance upon the
representations and warranties herein set forth, the Company hereby grants an
option to the Underwriter to purchase up to 300,000 Option Securities at the
same purchase price per share as the Underwriter shall pay for the Underwritten
Securities. Said option may be exercised only to cover over-allotments in the
sale of the Underwritten Securities by the Underwriter. Said option may be
exercised in whole or in part at any time on or before the 30th day after the
date of the Prospectus upon written or telegraphic notice by the Underwriter to
the Company setting forth the number of shares of the Option Securities as to
which the Underwriter is exercising the option and the settlement date.

         3. Delivery and Payment. Delivery of and payment for the Underwritten
Securities and the Option Securities (if the option provided for in Section 2(b)
hereof shall have been exercised on or before the third Business Day (as defined
herein) prior to the Closing Date) shall be made at 10:00 AM, New York City
time, on June 18, 2003, or at such time on such later date not more than three
Business Days after the foregoing date as the Underwriter shall designate, which
date and time may be postponed by agreement between the Underwriter and the
Company or as provided in Section 9 hereof (such date and time of delivery and
payment for the Securities being herein called the "Closing Date"). Delivery of
the Securities shall be made to the account of the Underwriter against payment


                                       12


by the Underwriter of purchase price of the Securities being sold by the Company
by wire transfer payable in same-day funds to the account specified by the
Company. Delivery of the Underwritten Securities and the Option Securities shall
be made through the facilities of The Depository Trust Company unless the
Underwriter shall otherwise instruct.

                  If the option provided for in Section 2(b) hereof is exercised
after the third Business Day prior to the Closing Date, the Company will deliver
the Option Securities (at the expense of the Company) to the Underwriter, at 388
Greenwich Street, New York, New York 10013, on the date specified by the
Underwriter (which shall be within three Business Days after exercise of said
option) for the account of the Underwriter, against payment by the Underwriter
of the purchase price thereof by wire transfer payable in same-day funds to the
account specified by the Company. If settlement for the Option Securities occurs
after the Closing Date, the Company will deliver to the Underwriter on the
settlement date for the Option Securities, and the obligation of the Underwriter
to purchase the Option Securities shall be conditioned upon receipt of,
supplemental opinions, certificates and letters confirming as of such date the
opinions, certificates and letters delivered on the Closing Date pursuant to
Section 6 hereof.

         4. Offering by Underwriter. It is understood that the Underwriter
proposes to offer the Securities for sale to the public as set forth in the
Prospectus.

         5. Agreements. The Company agrees with the Underwriter that:

         (a) The Company will use its best efforts to cause the Registration
     Statement, if not effective at the Execution Time, and any amendment
     thereof, to become effective. Prior to the termination of the offering of
     the Securities, the Company will not file any amendment of the Registration
     Statement or supplement to the Prospectus or any Rule 462(b) Registration
     Statement unless the Company has furnished you a copy for your review prior
     to filing and will not file any such proposed amendment or supplement to
     which you reasonably object. Subject to the foregoing sentence, if the
     Registration Statement has become or becomes effective pursuant to Rule
     430A, or filing of the Prospectus is otherwise required under Rule 424(b),
     the Company will cause the Prospectus, properly completed, and any
     supplement thereto to be filed in a form approved by the Underwriter with
     the Commission pursuant to the applicable paragraph of Rule 424(b) within
     the time period prescribed and will provide evidence satisfactory to the
     Underwriter of such timely filing. The Company will promptly advise the
     Underwriter (i) when the Registration Statement, if not effective at the
     Execution Time, shall have become effective, (ii) when the Prospectus, and
     any supplement thereto, shall have been filed (if required) with the
     Commission pursuant to Rule 424(b) or when any Rule 462(b) Registration
     Statement shall have been filed with the Commission, (iii) when, prior to


                                       13


     termination of the offering of the Securities, any amendment to the
     Registration Statement shall have been filed or become effective, (iv) of
     any request by the Commission or its staff for any amendment of the
     Registration Statement, or any Rule 462(b) Registration Statement, or for
     any supplement to the Prospectus or for any additional information, (v) of
     the issuance by the Commission of any stop order suspending the
     effectiveness of the Registration Statement or the institution or
     threatening of any proceeding for that purpose and (vi) of the receipt by
     the Company of any notification with respect to the suspension of the
     qualification of the Securities for sale in any jurisdiction or the
     institution or threatening of any proceeding for such purpose. The Company
     will use its best efforts to prevent the issuance of any such stop order or
     the suspension of any such qualification and, if issued, to obtain as soon
     as possible the withdrawal thereof.

         (b) If, at any time when a prospectus relating to the Securities is
     required to be delivered under the Act, any event occurs as a result of
     which the Prospectus as then supplemented would include any untrue
     statement of a material fact or omit to state any material fact necessary
     to make the statements therein in the light of the circumstances under
     which they were made not misleading, or if it shall be necessary to amend
     the Registration Statement or supplement the Prospectus to comply with the
     Act or the Exchange Act or the respective rules thereunder, the Company
     promptly will (i) notify the Underwriter of such event, (ii) prepare and
     file with the Commission, subject to the second sentence of paragraph (a)
     of this Section 5, an amendment or supplement which will correct such
     statement or omission or effect such compliance and (iii) supply any
     supplemented Prospectus to you in such quantities as you may reasonably
     request.

         (c) As soon as practicable, the Company will make generally available
     to its security holders and to the Underwriter an earnings statement or
     statements of the Company and the Subsidiaries which will satisfy the
     provisions of Section 11(a) of the Act and Rule 158 under the Act.

         (d) The Company will furnish to the Underwriter and counsel for the
     Underwriter, without charge, signed copies of the Registration Statement
     (including exhibits thereto) and, so long as delivery of a prospectus by an
     Underwriter or dealer may be required by the Act, as many copies of each
     Preliminary Prospectus and the Prospectus and any supplement thereto as the
     Underwriter may reasonably request. The Company will pay the expenses of
     printing or other production of all documents relating to the offering.

         (e) The Company will arrange, if necessary, for the qualification of
     the Securities for sale under the laws of such jurisdictions as the
     Underwriter may designate, will maintain such qualifications in effect so
     long as required for the distribution of the Securities and will pay any
     fee of the National Association of Securities Dealers, Inc., in connection
     with its review of the offering; provided that in no event shall the
     Company be obligated to qualify to do business in any jurisdiction where it
     is not now so qualified or to take any action that would subject it to
     service of process in suits, other than those arising out of the offering
     or sale of the Securities, in any jurisdiction where it is not now so
     subject.


                                       14


         (f) The Company will not, without the prior written consent of the
     Underwriter, offer, sell, contract to sell, pledge, or otherwise dispose
     of, (or enter into any transaction which is designed to, or might
     reasonably be expected to, result in the disposition (whether by actual
     disposition or effective economic disposition due to cash settlement or
     otherwise) by the Company or any affiliate of the Company or any person in
     privity with the Company or any affiliate of the Company) directly or
     indirectly, including the filing (or participation in the filing) of a
     registration statement with the Commission in respect of, or establish or
     increase a put equivalent position or liquidate or decrease a call
     equivalent position within the meaning of Section 16 of the Exchange Act,
     any other shares of Common Shares or any securities convertible into, or
     exercisable, or exchangeable for, Common Shares; or publicly announce an
     intention to effect any such transaction, for a period of 45 days after the
     date of the Underwriting Agreement; provided, however, that the Company may
     issue and sell Common Shares pursuant to any employee or trustee option or
     long-term incentive plan, share ownership plan or dividend purchase or
     reinvestment plan of the Company in effect at the Execution Time and the
     Company may issue Common Shares issuable upon the conversion or redemption
     of securities or the exercise of options or warrants outstanding at the
     Execution Time or the conversion or redemption of units in the Operating
     Partnership outstanding at the Execution Time; or the conversion of equity
     in any of the Subsidiaries identified on Schedule I as "Joint Ventures"
     pursuant to and in accordance with conversion rights in effect at the
     Execution Time.

         (g) The Company will comply with all applicable securities and other
     applicable laws, rules and regulations, including, without limitation, the
     Sarbanes Oxley Act, and will use its best efforts to cause the Company's
     trustees and officers, in their capacities as such, to comply with such
     laws, rules and regulations, including, without limitation, the provisions
     of the Sarbanes Oxley Act.

         (h) The Company will not take, directly or indirectly, any action
     designed to or that would constitute or that might reasonably be expected
     to cause or result in, under the Exchange Act or otherwise, stabilization
     or manipulation of the price of any security of the Company to facilitate
     the sale or resale of the Securities.

         6. Conditions to the Obligations of the Underwriter. The obligations of
the Underwriter to purchase the Underwritten Securities and the Option
Securities, as the case may be, shall be subject to the accuracy of the
representations and warranties on the part of the Company and the Operating
Partnership contained herein as of the Execution Time, the Closing Date and any


                                       15


settlement date pursuant to Section 3 hereof, to the accuracy of the statements
of the Company and the Operating Partnership made in any certificates pursuant
to the provisions hereof, to the performance by the Company and the Operating
Partnership of their respective obligations hereunder and to the following
additional conditions:

         (a) If the Registration Statement has not become effective prior to the
     Execution Time, unless the Underwriter agrees in writing to a later time,
     the Registration Statement will become effective not later than (i) 6:00 PM
     New York City time on the date of determination of the public offering
     price, if such determination occurred at or prior to 3:00 PM New York City
     time on such date or (ii) 9:30 AM on the Business Day following the day on
     which the public offering price was determined, if such determination
     occurred after 3:00 PM New York City time on such date; if filing of the
     Prospectus, or any supplement thereto, is required pursuant to Rule 424(b),
     the Prospectus, and any such supplement, will be filed in the manner and
     within the time period required by Rule 424(b); and no stop order
     suspending the effectiveness of the Registration Statement shall have been
     issued and no proceedings for that purpose shall have been instituted or
     threatened.

         (b) The Company shall have requested and caused Pepper Hamilton LLP,
     counsel for the Company, to have furnished to the Underwriter their opinion
     dated the Closing Date and addressed to the Underwriter to the effect set
     forth in Exhibit A attached hereto. In rendering such opinion, such counsel
     may rely (A) as to matters involving the application of laws of any
     jurisdiction other than the States of Pennsylvania, Maryland and Delaware
     or the Federal laws of the United States, to the extent they deem proper
     and specified in such opinion, upon the opinion of other counsel of good
     standing whom they believe to be reliable and who are satisfactory to
     counsel for the Underwriter and (B) as to matters of fact, to the extent
     they deem proper, on certificates of responsible officers of the Company
     and public officials. References to the Prospectus in this paragraph (b)
     shall also include any supplements thereto at the Closing Date.

         (c) The Underwriter shall have received from Proskauer Rose LLP,
     counsel for the Underwriter, such opinion or opinions, dated the Closing
     Date and addressed to the Underwriter, with respect to the issuance and
     sale of the Securities, the Registration Statement, the Prospectus
     (Underwriter together with any supplement thereto) and other related
     matters as the Underwriter may reasonably require, and the Company shall
     have furnished to such counsel such documents as they request for the
     purpose of enabling them to pass upon such matters.

         (d) The Company shall have furnished to the Underwriter a certificate
     of the Company, signed by the President and Chief Executive Officer and the


                                       16


     principal financial or accounting officer of the Company, dated the Closing
     Date, to the effect that the signers of such certificate have carefully
     examined the Registration Statement, the Prospectus, any supplements to the
     Prospectus and this Agreement and that:

             (i) the representations and warranties of the Company in this
         Agreement are true and correct on and as of the Closing Date with the
         same effect as if made on the Closing Date and the Company has complied
         with all the agreements and satisfied all the conditions on its part to
         be performed or satisfied at or prior to the Closing Date;

             (ii) no stop order suspending the effectiveness of the Registration
         Statement has been issued and no proceedings for that purpose have been
         instituted or, to the Company's knowledge, threatened; and

             (iii) since the date of the most recent financial statements
         included or incorporated by reference in the Prospectus (exclusive of
         any supplement thereto), there has been no material adverse effect on
         the condition (financial or otherwise), prospects, earnings, business
         or properties of the Company and its Subsidiaries, taken as a whole,
         whether or not arising from transactions in the ordinary course of
         business, except as set forth in or contemplated in the Prospectus
         (exclusive of any supplement thereto).

         (e) The Company shall have requested and caused KPMG LLP to have
     furnished to the Underwriter, at the Execution Time and at the Closing
     Date, letters, dated respectively as of the Execution Time and as of the
     Closing Date, in form and substance satisfactory to the Underwriter,
     confirming that they are independent accountants within the meaning of the
     Act and the Exchange Act and the respective applicable rules and
     regulations adopted by the Commission thereunder and that they have
     performed a review of the unaudited interim financial information of the
     Company for the three-month period ended March 31, 2003 and as at March 31,
     2003, in accordance with Statement on Auditing Standards No. 100, and
     stating in effect that:

             (i) in their opinion the audited consolidated financial statements
         and financial statement schedules incorporated by reference in the
         Registration Statement and the Prospectus and reported on by them
         comply as to form in all material respects with the applicable
         accounting requirements of the Act and the Exchange Act and the related
         rules and regulations adopted by the Commission;


                                       17


             (ii) on the basis of a reading of the latest unaudited financial
         statements made available by the Company and its subsidiaries; their
         limited review, in accordance with standards established under
         Statement on Auditing Standards No. 100, of the unaudited interim
         financial information for the three-month period ended March 31, 2003,
         and as at March 31, 2003 incorporated by reference in the Registration
         Statement and the Prospectus; carrying out certain specified procedures
         (but not an examination in accordance with generally accepted auditing
         standards) which would not necessarily reveal matters of significance
         with respect to the comments set forth in such letter; a reading of the
         minutes of the meetings of the shareholders, the Board of Trustees, the
         Audit Committee, the Corporate Governance Committee and the
         Compensation Committee of the Company; and inquiries of certain
         officials of the Company who have responsibility for financial and
         accounting matters of the Company and its subsidiaries as to
         transactions and events subsequent to December 31, 2002, nothing came
         to their attention which caused them to believe that:

                 (A) any unaudited financial statements incorporated by
             reference in the Registration Statement and the Prospectus do not
             comply as to form in all material respects with the applicable
             accounting requirements of the Exchange Act as it applies to Form
             10-Q and with the related rules and regulations adopted by the
             Commission; and said unaudited financial statements are not in
             conformity with generally accepted accounting principles applied on
             a basis substantially consistent with that of the audited financial
             statements included or incorporated by reference in the
             Registration Statement and the Prospectus;

                 (B) with respect to the period subsequent to March 31, 2003,
             there were any changes, at a specified date not more than five days
             prior to the date of the letter, in the par value of preferred
             shares and common shares of beneficial interest issued and
             outstanding, increases in consolidated debt or any decreases in
             consolidated total assets or total beneficiaries' equity of the
             Company as compared with the amounts shown on the March 31, 2003,
             unaudited condensed consolidated balance sheet included or
             incorporated by reference in the Registration Statement and the
             Prospectus, or for the period from April 1, 2003 to such specified
             date there were any decreases, as compared with the corresponding
             period in the preceding year; in consolidated total revenue or in
             the total or per share amounts of net income, except in all
             instances for changes, increases or decreases that the Registration
             Statement discloses have occurred or may occur, in which case the


                                       18


             letter shall be accompanied by an explanation by the Company as to
             the significance thereof unless said explanation is not deemed
             necessary by the Underwriter; and

                 (C) the information included or incorporated by reference in
             the Registration Statement and Prospectus in response to Regulation
             S-K, Item 301 (Selected Financial Data), Item 302 (Supplementary
             Financial Information), Item 402 (Executive Compensation) and Item
             503(d) (Ratio of Earnings to Fixed Charges) is not in conformity
             with the applicable disclosure requirements of Regulation S-K; and

             (iii) they have performed certain other specified procedures as a
         result of which they determined that certain information of an
         accounting, financial or statistical nature (which is limited to
         accounting, financial or statistical information derived from the
         general accounting records of the Company and its subsidiaries) set
         forth in the Registration Statement and the Prospectus and in Exhibit
         12 to the Registration Statement, including the information set forth
         under the caption "Selected Financial Data" in the Prospectus, the
         information included or incorporated by reference in Items 1, 2, 6, 7
         and 11 of the Company's Annual Report on Form 10-K, incorporated by
         reference in the Registration Statement and the Prospectus, and the
         information included in the "Management's Discussion and Analysis of
         Financial Condition and Results of Operations" included or incorporated
         by reference in the Company's Quarterly Reports on Form 10-Q,
         incorporated by reference in the Registration Statement and the
         Prospectus, agrees with the accounting records of the Company and its
         subsidiaries, excluding any questions of legal interpretation.

         References to the Prospectus in this paragraph (g) include any
     supplement thereto at the date of the letter.

         (f) Subsequent to the Execution Time or, if earlier, the dates as of
     which information is given in the Registration Statement (exclusive of any
     amendment thereof) and the Prospectus (exclusive of any supplement
     thereto), there shall not have been (i) any change or decrease specified in
     the letter or letters referred to in paragraph (e) of this Section 6 or
     (ii) any change, or any development involving a prospective change, in or
     affecting the condition (financial or otherwise), earnings, business or
     properties of the Company and the Subsidiaries, taken as a whole, whether
     or not arising from transactions in the ordinary course of business, except
     as set forth in or contemplated in the Prospectus (exclusive of any
     supplement thereto) the effect of which, in any case referred to in clause
     (i) or (ii) above, is, in the sole judgment of the Underwriter, so material


                                       19


     and adverse as to make it impractical or inadvisable to proceed with the
     offering or delivery of the Securities as contemplated by the Registration
     Statement (exclusive of any amendment thereof) and the Prospectus
     (exclusive of any supplement thereto).

         (g) Prior to the Closing Date, the Company shall have furnished to the
     Underwriter such further information, certificates and documents as the
     Underwriter may reasonably request.

         (h) Subsequent to the Execution Time, there shall not have been any
     decrease in the rating of any of the Company's debt securities by any
     "nationally recognized statistical rating organization" (as defined for
     purposes of Rule 436(g) under the Act) or any notice given of any intended
     or potential decrease in any such rating or of a possible change in any
     such rating that does not indicate the direction of the possible change.

         (i) The Securities shall have been listed and admitted and authorized
     for trading on the New York Stock Exchange, and satisfactory evidence of
     such actions shall have been provided to the Underwriter.

         (j) At the Execution Time, the Company shall have furnished to the
     Underwriter a letter substantially in the form of Exhibit B attached hereto
     from each officer and trustee of the Company addressed to the Underwriter.

         If any of the conditions specified in this Section 6 shall not have
been fulfilled when and as provided in this Agreement, or if any of the opinions
and certificates mentioned above or elsewhere in this Agreement shall not be
reasonably satisfactory in form and substance to the Underwriter and counsel for
the Underwriter, this Agreement and all obligations of the Underwriter hereunder
may be canceled at, or at any time prior to, the Closing Date by the
Underwriter. Notice of such cancelation shall be given to the Company in writing
or by telephone or facsimile confirmed in writing.

         The documents required to be delivered by this Section 6 shall be
delivered at the office of Proskauer Rose LLP, counsel for the Underwriter, at
1585 Broadway, New York, New York 10036, on the Closing Date.

         7. Reimbursement of Underwriter's Expenses. If the sale of the
Securities provided for herein is not consummated because any condition to the
obligations of the Underwriter set forth in Section 6 hereof is not satisfied,
because of any termination pursuant to Section 9 hereof or because of any
refusal, inability or failure on the part of the Company to perform any
agreement herein or comply with any provision hereof other than by reason of a
default by the Underwriter, the Company will reimburse the Underwriter on demand
for all out-of-pocket expenses (including reasonable fees and disbursements of
counsel) that shall have been incurred by them in connection with the proposed
purchase and sale of the Securities.


                                       20


         8. Indemnification and Contribution. (a) The Company and the Operating
Partnership jointly and severally agree to indemnify and hold harmless the
Underwriter, the directors, officers, employees and agents of the Underwriter
and each person who controls the Underwriter within the meaning of either the
Act or the Exchange Act against any and all losses, claims, damages or
liabilities, joint or several, to which they or any of them may become subject
under the Act, the Exchange Act or other Federal or state statutory law or
regulation, at common law or otherwise, insofar as such losses, claims, damages
or liabilities (or actions in respect thereof) arise out of or are based upon
any untrue statement or alleged untrue statement of a material fact contained in
the registration statement for the registration of the Securities as originally
filed or in any amendment thereof, or in any Preliminary Prospectus or the
Prospectus, or in any amendment thereof or supplement thereto, or arise out of
or are based upon the omission or alleged omission to state therein a material
fact required to be stated therein or necessary to make the statements therein
not misleading, and agrees to reimburse each such indemnified party, as
incurred, for any legal or other expenses reasonably incurred by them in
connection with investigating or defending any such loss, claim, damage,
liability or action; provided, however, that the Company and the Operating
Partnership will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon any such untrue
statement or alleged untrue statement or omission or alleged omission made
therein in reliance upon and in conformity with written information furnished to
the Company by the Underwriter specifically for inclusion therein. This
indemnity agreement will be in addition to any liability which the Company and
the Operating Partnership may otherwise have.

         (b) The Underwriter agrees to indemnify and hold harmless the Company,
     each of its trustees, each of its officers who signs the Registration
     Statement, and each person who controls the Company within the meaning of
     either the Act or the Exchange Act to the same extent as the foregoing
     indemnity to the Underwriter, but only with reference to written
     information relating to the Underwriter furnished to the Company by the
     Underwriter specifically for inclusion in the documents referred to in the
     foregoing indemnity. This indemnity agreement will be in addition to any
     liability which the Underwriter may otherwise have. The Company
     acknowledges that the statements set forth on the cover page regarding
     delivery of the Securities and, under the heading "Underwriting," (i) the
     sentences related to concessions and reallowances and (ii) the paragraph
     related to stabilization, syndicate covering transactions and penalty bids
     in any Preliminary Prospectus and the Prospectus constitute the only
     information furnished in writing by or on behalf of the Underwriter for
     inclusion in any Preliminary Prospectus or the Prospectus.


                                       21


         (c) Promptly after receipt by an indemnified party under this Section 8
     of notice of the commencement of any action, such indemnified party will,
     if a claim in respect thereof is to be made against the indemnifying party
     under this Section 8, notify the indemnifying party in writing of the
     commencement thereof; but the failure so to notify the indemnifying party
     (i) will not relieve it from liability under paragraph (a) or (b) above
     unless and to the extent it did not otherwise learn of such action and such
     failure results in the forfeiture by the indemnifying party of substantial
     rights and defenses and (ii) will not, in any event, relieve the
     indemnifying party from any obligations to any indemnified party other than
     the indemnification obligation provided in paragraph (a) or (b) above. The
     indemnifying party shall be entitled to appoint counsel of the indemnifying
     party's choice at the indemnifying party's expense to represent the
     indemnified party in any action for which indemnification is sought (in
     which case the indemnifying party shall not thereafter be responsible for
     the fees and expenses of any separate counsel retained by the indemnified
     party or parties except as set forth below); provided, however, that such
     counsel shall be satisfactory to the indemnified party. Notwithstanding the
     indemnifying party's election to appoint counsel to represent the
     indemnified party in an action, the indemnified party shall have the right
     to employ separate counsel (including local counsel), and the indemnifying
     party shall bear the reasonable fees, costs and expenses of such separate
     counsel if (i) the use of counsel chosen by the indemnifying party to
     represent the indemnified party would present such counsel with a conflict
     of interest, (ii) the actual or potential defendants in, or targets of, any
     such action include both the indemnified party and the indemnifying party
     and the indemnified party shall have reasonably concluded that there may be
     legal defenses available to it and/or other indemnified parties which are
     different from or additional to those available to the indemnifying party,
     (iii) the indemnifying party shall not have employed counsel satisfactory
     to the indemnified party to represent the indemnified party within a
     reasonable time after notice of the institution of such action or (iv) the
     indemnifying party shall authorize the indemnified party to employ separate
     counsel at the expense of the indemnifying party. An indemnifying party
     will not, without the prior written consent of the indemnified parties,
     settle or compromise or consent to the entry of any judgment with respect
     to any pending or threatened claim, action, suit or proceeding in respect
     of which indemnification or contribution may be sought hereunder (whether
     or not the indemnified parties are actual or potential parties to such
     claim or action) unless such settlement, compromise or consent includes an
     unconditional release of each indemnified party from all liability arising
     out of such claim, action, suit or proceeding.

         (d) In the event that the indemnity provided in paragraph (a), (b) or
(c) of this Section 8 is unavailable to or insufficient to hold harmless an
indemnified party for any reason, the Company and the Operating Partnership,
jointly and severally, and the Underwriter agree to contribute to the aggregate
losses, claims, damages and liabilities (including legal or other expenses


                                       22


reasonably incurred in connection with investigating or defending same)
(collectively "Losses") to which the Company, the Operating Partnership and the
Underwriter, may be subject in such proportion as is appropriate to reflect the
relative benefits received by the Company and the Operating Partnership on the
one hand, and by the Underwriter on the other from the offering of the
Securities; provided, however, that in no case shall (i) the Underwriter (except
as may be provided in any agreement among underwriters relating to the offering
of the Securities) be responsible for any amount in excess of the underwriting
discount or commission applicable to the Securities purchased by the Underwriter
hereunder. If the allocation provided by the immediately preceding sentence is
unavailable for any reason, the Company and the Operating Partnership, jointly
and severally, and the Underwriter shall contribute in such proportion as is
appropriate to reflect not only such relative benefits but also the relative
fault of the Company and the Operating Partnership on the one hand and of the
Underwriter on the other in connection with the statements or omissions which
resulted in such Losses as well as any other relevant equitable considerations.
Benefits received by the Company and the Operating Partnership shall be deemed
to be equal to the total net proceeds from the offering (before deducting
expenses) received by it, and benefits received by the Underwriter shall be
deemed to be equal to the total underwriting discounts and commissions, in each
case as set forth on the cover page of the Prospectus. Relative fault shall be
determined by reference to, among other things, whether any untrue or any
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information provided by the Company and the
Operating Partnership on the one hand or the Underwriter on the other, the
intent of the parties and their relative knowledge, access to information and
opportunity to correct or prevent such untrue statement or omission. The Company
and the Operating Partnership and the Underwriter agree that it would not be
just and equitable if contribution were determined by pro rata allocation or any
other method of allocation which does not take account of the equitable
considerations referred to above. Notwithstanding the provisions of this
paragraph (d), no person guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation. For purposes of
this Section 8, each person who controls the Underwriter within the meaning of
either the Act or the Exchange Act and each director, officer, employee and
agent of the Underwriter shall have the same rights to contribution as the
Underwriter, and each person who controls the Company within the meaning of
either the Act or the Exchange Act, each officer of the Company who shall have
signed the Registration Statement and each trustee of the Company shall have the
same rights to contribution as the Company, subject in each case to the
applicable terms and conditions of this paragraph (d).

         9. Termination. This Agreement shall be subject to termination in the
absolute discretion of the Underwriter, by notice given to the Company prior to
delivery of and payment for the Securities, if at any time prior to such time
(i) trading in the Company's Common Shares shall have been suspended by the
Commission or the New York Stock Exchange or trading in securities generally on
the New York Stock Exchange shall have been suspended or limited or minimum
prices shall have been established on the New York Stock Exchange, (ii) a


                                       23


banking moratorium shall have been declared either by Federal or New York State
authorities or (iii) there shall have occurred any outbreak or escalation of
hostilities, declaration by the United States of a national emergency or war, or
other calamity or crisis the effect of which on financial markets is such as to
make it, in the sole judgment of the Underwriter, impractical or inadvisable to
proceed with the offering or delivery of the Securities as contemplated by the
Prospectus (exclusive of any supplement thereto).

         10. Representations and Indemnities to Survive. The respective
agreements, representations, warranties, indemnities and other statements of the
Company or the Operating Partnership or its officers or partners and of the
Underwriter set forth in or made pursuant to this Agreement will remain in full
force and effect, regardless of any investigation made by or on behalf of the
Underwriter, the Operating Partnership or the Company or any of the officers,
directors, trustees, employees, agents or controlling persons referred to in
Section 8 hereof, and will survive delivery of and payment for the Securities.
The provisions of Sections 7 and 8 hereof shall survive the termination or
cancelation of this Agreement.

         11. Notices. All communications hereunder will be in writing and
effective only on receipt, and, if sent to the Underwriter, will be mailed,
delivered or telefaxed to the Citigroup Global Markets Inc. General Counsel (fax
no.: (212) 816-7912) and confirmed to the General Counsel, Citigroup Global
Markets Inc., at 388 Greenwich Street, New York, New York, 10013, Attention:
General Counsel; or, if sent to the Company, will be mailed, delivered or
telefaxed to Brandywine Realty Trust General Counsel (fax no. 610-832-4928) and
confirmed to it at Brandywine Realty Trust, 401 Plymouth Road, Suite 500,
Plymouth Meeting, Pennsylvania 19462, attention of the Legal Department.

         12. Successors. This Agreement will inure to the benefit of and be
binding upon the parties hereto and their respective successors and the
officers, directors, trustees, employees, agents and controlling persons
referred to in Section 8 hereof, and no other person will have any right or
obligation hereunder.

         13. Applicable Law. This Agreement will be governed by and construed in
accordance with the laws of the State of New York applicable to contracts made
and to be performed within the State of New York.

         14. Counterparts. This Agreement may be signed in one or more
counterparts, each of which shall constitute an original and all of which
together shall constitute one and the same agreement.

         15. Headings. The section headings used herein are for convenience only
and shall not affect the construction hereof.


                                       24


         16. Definitions. The terms which follow, when used in this Agreement,
shall have the meanings indicated.

         "Act" shall mean the Securities Act of 1933, as amended, and the rules
     and regulations of the Commission promulgated thereunder.

         "Business Day" shall mean any day other than a Saturday, a Sunday or a
     legal holiday or a day on which banking institutions or trust companies are
     authorized or obligated by law to close in New York City.

         "Commission" shall mean the Securities and Exchange Commission.

         "Effective Date" shall mean each date and time that the Registration
     Statement, any post-effective amendment or amendments thereto and any Rule
     462(b) Registration Statement became or become effective.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
     amended, and the rules and regulations of the Commission promulgated
     thereunder.

         "Execution Time" shall mean the date and time that this Agreement is
     executed and delivered by the parties hereto.

         "Preliminary Prospectus" shall mean any preliminary prospectus referred
     to in paragraph 1(i)(a) above and any preliminary prospectus included in
     the Registration Statement at the Effective Date that omits Rule 430A
     Information.

         "Prospectus" shall mean the prospectus relating to the Securities that
     is first filed pursuant to Rule 424(b) after the Execution Time or, if no
     filing pursuant to Rule 424(b) is required, shall mean the form of final
     prospectus relating to the Securities included in the Registration
     Statement at the Effective Date.

         "Registration Statement" shall mean the registration statement referred
     to in paragraph 1(i)(a) above, including exhibits and financial statements,
     as amended at the Execution Time (or, if not effective at the Execution
     Time, in the form in which it shall become effective) and, in the event any
     post-effective amendment thereto or any Rule 462(b) Registration Statement
     becomes effective prior to the Closing Date, shall also mean such
     registration statement as so amended or such Rule 462(b) Registration
     Statement, as the case may be. Such term shall include any Rule 430A
     Information deemed to be included therein at the Effective Date as provided
     by Rule 430A.

         "Rule 424", "Rule 430A" and "Rule 462" refer to such rules under the
     Act.


                                       25


         "Rule 430A Information" shall mean information with respect to the
     Securities and the offering thereof permitted to be omitted from the
     Registration Statement when it becomes effective pursuant to Rule 430A.

         "Rule 462(b) Registration Statement" shall mean a registration
     statement and any amendments thereto filed pursuant to Rule 462(b) relating
     to the offering covered by the registration statement referred to in
     Section 1(a) hereof.

                                   * * * * * *


                                       26



         If the foregoing is in accordance with your understanding of our
agreement, please sign and return to us the enclosed duplicate hereof, whereupon
this letter and your acceptance shall represent a binding agreement among the
Company, the Operating Partnership and the Underwriter.



                                    Very truly yours,


                                    BRANDYWINE REALTY TRUST



                                    By:  ____________________________________
                                         Name:  Gerard H. Sweeney
                                         Title: President and Chief Executive
                                                Officer


                                    BRANDYWINE OPERATING
                                    PARTNERSHIP, L.P.

                                    By:  Brandywine Realty Trust, its general
                                         partner


                                    By:  ____________________________________
                                         Name:  Gerard H. Sweeney
                                         Title: President and Chief Executive
                                                Officer


The foregoing Agreement is hereby
confirmed and accepted as of the
date first above written.

CITIGROUP GLOBAL MARKETS INC.


By: ____________________________
    Name:
    Title:






                                   SCHEDULE I
                                   ----------

                             BRANDYWINE REALTY TRUST
                                  SUBSIDIARIES


- -------------------------------------------- -----------------------------------------------
                                                                PARTNERS
            LIMITED PARTNERSHIP
               SUBSIDIARIES                                 (Capital/Profits)

- -------------------------------------------- -----------------------------------------------
                                          
AAPOP 1, L.P., a Delaware limited            AAP Sub One, Inc. -- GP - 1%
partnership
                                             Atlantic American Properties Trust -- GP - 98%
                                             and LP - 1%

- -------------------------------------------- -----------------------------------------------
AAPOP 2, L.P., a Delaware limited            Brandywine Witmer, L.L.C. GP - 0.5%
partnership
                                             Witmer Operating Partnership I, L.P. -- GP -
                                             98.5% and LP - 1%

- -------------------------------------------- -----------------------------------------------
Brandywine Ambassador, L.P., a               Brandywine Ambassador, L.L.C. - GP-1%
Pennsylvania limited partnership
                                             BOP - LP 99%


- -------------------------------------------- -----------------------------------------------
Brandywine Central, L.P., a Pennsylvania     Brandywine F.C., LP-- GP. - 98%
limited partnership
                                             BTRS, Inc. -- LP. - 2%

- -------------------------------------------- -----------------------------------------------
Brandywine Croton, L.P., a Pennsylvania      Brandywine Grande B, L.P.
limited partnership
                                             LP - 99%

                                             Brandywine Croton, LLC - GP-1%

- -------------------------------------------- -----------------------------------------------
Brandywine Dominion, L.P., a Pennsylvania    Brandywine Dominion, LLC-- GP - 1%
limited partnership
                                             BOP(1) -- LP - 99%


- -------------------------------------------- -----------------------------------------------
Brandywine F.C., L.P., a Pennsylvania        Brandywine F.C., L.L.C.-- GP - 1%
limited partnership
                                             BOP -- LP-- 99%

- -------------------------------------------- -----------------------------------------------
Brandywine Grande B, L.P., a Delaware        Brandywine Grande B Corp.-- GP - 1%
limited partnership
                                             BOP -- LP - 99%

- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
                                                                PARTNERS
            LIMITED PARTNERSHIP
               SUBSIDIARIES                                 (Capital/Profits)

- -------------------------------------------- -----------------------------------------------
                                          
Brandywine Grande C, L.P., a Delaware        Brandywine Grande C Corp. - GP 1%
limited partnership
                                             BOP - LP - 99%


- -------------------------------------------- -----------------------------------------------
Brandywine I.S., L.P., a Pennsylvania        Brandywine I.S., LLC-- GP - 1%
limited partnership
                                             BOP -- LP 99%


- -------------------------------------------- -----------------------------------------------
Brandywine Metroplex, L.P., a Pennsylvania   Brandywine Metroplex, LLC - GP - 1%
limited partnership
                                             BOP - LP - 99%

- -------------------------------------------- -----------------------------------------------
Brandywine Norriton, L.P., a Pennsylvania    Brandywine Norriton, L.L.C.-- GP 1%
limited partnership
                                             BOP -- 99%

- -------------------------------------------- -----------------------------------------------
Brandywine Operating Partnership, L.P., a    BRT -- GP and LP(2)
Delaware limited partnership
                                             LP's (other than BRT)(2)


- -------------------------------------------- -----------------------------------------------
Brandywine P.M., L.P., a Pennsylvania        Brandywine P.M., LLC -- GP - 1%
limited partnership
                                             BOP -- LP 99%


- -------------------------------------------- -----------------------------------------------
Brandywine TB Florig, L.P., a Pennsylvania   Brandywine TB Florig, LLC - GP - 1%
limited partnership
                                             BOP -- LP 99%


- -------------------------------------------- -----------------------------------------------
Brandywine TB Inn, L.P., a Pennsylvania      Brandywine TB Inn, L.L.C. -- GP - 1%
limited partnership
                                             BOP - LP 99%

- -------------------------------------------- -----------------------------------------------
Brandywine TB I, L.P., a Pennsylvania        Brandywine TB I LLC -- GP - 1%
limited partnership
                                             BOP -- LP - 99%

- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
                                                                PARTNERS
            LIMITED PARTNERSHIP
               SUBSIDIARIES                                 (Capital/Profits)

- -------------------------------------------- -----------------------------------------------
                                          
Brandywine TB II, L.P., a Pennsylvania       Brandywine TB II LLC -- GP - 1%
limited partnership
                                             BOP -- LP - 99%


- -------------------------------------------- -----------------------------------------------
Brandywine TB V, L.P., a Pennsylvania        Brandywine TB V, L.L.C. -- GP - 1%
limited partnership
                                             BOP -- LP - 99%


- -------------------------------------------- -----------------------------------------------
Brandywine TB VI, L.P., a Pennsylvania       Brandywine TB VI, L.L.C. -- GP - 1%
limited partnership
                                             BOP -- LP - 99%


- -------------------------------------------- -----------------------------------------------
Brandywine TB VIII, L.P., a Pennsylvania     Brandywine TB VIII, L.L.C. -  GP - 1%
limited partnership
                                             BOP -- LP-99%


- -------------------------------------------- -----------------------------------------------
C/N Iron Run Limited Partnership III, a      BOP -- GP - 2%
Pennsylvania limited partnership
                                             BOP -- LP - 87%

                                             WOP(3) -- LP - 11%

- -------------------------------------------- -----------------------------------------------
C/N Leedom Limited Partnership II, a         BOP -- GP - 89%
Pennsylvania limited partnership
                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
C/N Oaklands Limited Partnership I, a        WOP -- GP - 88.9%
Pennsylvania limited partnership
                                             BOP -- LP - .1%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
C/N Oaklands Limited Partnership III, a      BOP -- GP - 2%
Pennsylvania limited partnership
                                             BOP -- LP - 87%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
                                                                PARTNERS
            LIMITED PARTNERSHIP
               SUBSIDIARIES                                 (Capital/Profits)

- -------------------------------------------- -----------------------------------------------
                                          
Eight Oliver/Brandywine Partner, L.P., a     Brandywine TB VIII L.P. - LP - 50%
Pennsylvania limited partnership
                                             Donald W. Pulver LP - 1%

                                             Eight Oliver Tower Associates - GP - 49%

- -------------------------------------------- -----------------------------------------------
e-Tenants.com Holding, L.P., a               BOP - GP - 99%
Pennsylvania limited partnership
                                             BTRS, Inc. - LP - 1%


- -------------------------------------------- -----------------------------------------------
Fifteen Horsham, L.P., a Pennsylvania        WOP -- GP - 1%
limited partnership
                                             BOP -- LP 1%

                                             WOP -- LP - 98%

- -------------------------------------------- -----------------------------------------------
Iron Run Limited Partnership V, a            BOP -- GP - 2%
Pennsylvania limited partnership
                                             BOP -- LP - 87%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
LC/N Horsham Limited Partnership, a          WOP -- GP - 88.9%
Pennsylvania limited partnership
                                             BOP -- LP - .1%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
LC/N Keith Valley Limited Partnership I, a   WOP -- GP - 88.9%
Pennsylvania limited partnership
                                             BOP -- LP - .1%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
Newtech IV Limited Partnership, a            WOP -- GP - 88.9%
Pennsylvania limited partnership
                                             BOP -- LP - .1%

                                             WOP -- LP - 11%

- -------------------------------------------- -----------------------------------------------
Nichols Lansdale Limited Partnership III,    WOP -- GP - 88.9% / 98.9%
a Pennsylvania limited partnership
                                             BOP -- LP - 11.1% / 1.1%


- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
                                                                PARTNERS
            LIMITED PARTNERSHIP
               SUBSIDIARIES                                 (Capital/Profits)

- -------------------------------------------- -----------------------------------------------
                                          
Witmer Operating Partnership I, L.P., a      Brandywine Witmer, LLC -- GP - 1% /1%
Delaware limited partnership
                                             BOP -- LP - 99% / 99%


- -------------------------------------------- -----------------------------------------------
100 Arrandale Associates, L.P., a            BOP -- GP -- 2% / 2%
Pennsylvania limited partnership(4)
                                             BOP -- LP -- 87% / 97%

                                             Prentiss -- 11% / 1%


- -------------------------------------------- -----------------------------------------------
111 Arrandale Associates, L.P., a            BOP -- GP-- 2% / 2%
Pennsylvania limited partnership(4)
                                             BOP -- LP -- 87% / 97%

                                             Prentiss -- 11% / 1%


- -------------------------------------------- -----------------------------------------------
440 Creamery Way Associates, L.P., a         BOP -- GP-- 2% / 2%
Pennsylvania limited partnership(4)
                                             BOP -- LP -- 87% / 97%

                                             Prentiss -- 11% / 1%


- -------------------------------------------- -----------------------------------------------
442 Creamery Way Associates, L.P., a         BOP-- GP-- 2% / 2%
Pennsylvania limited partnership(4)
                                             BOP -- LP -- 87% / 97%

                                             Prentiss -- 11% / 1%


- -------------------------------------------- -----------------------------------------------
481 John Young Way Associates, L.P., a       BOP -- GP -- 2% / 2%
Pennsylvania limited partnership(4)
                                             BOP -- LP -- 87% / 97%

                                             Prentiss -- 11% / 1%


- -------------------------------------------- -----------------------------------------------







- -------------------------------------------- -----------------------------------------------
            GENERAL PARTNERSHIP                           OWNERSHIP STRUCTURE

- -------------------------------------------- -----------------------------------------------
                                          
Brandywine 55 Ames Court Partnership, a      Brandywine Axinn I, LLC -- GP - 50%
New York general partnership
                                             Brandywine Axinn II, LLC -- GP - 50%

- -------------------------------------------- -----------------------------------------------
Brandywine Engineers Lane Partnership, a     Brandywine Axinn I, LLC -- GP - 50%
New York general partnership
                                             Brandywine Axinn II, LLC -- GP - 50%

- -------------------------------------------- -----------------------------------------------
Brandywine Broad Street Partnership, a New   Brandywine Axinn I, LLC -- GP - 50%
York general partnership
                                             Brandywine Axinn II, LLC -- GP - 50%

- -------------------------------------------- -----------------------------------------------
Interstate Center Associates, a Virginia     BOP -- 50%
general partnership
                                             Brandywine Interstate 50, L.L.C. - 50%
54-1815494

- -------------------------------------------- -----------------------------------------------
Iron Run Venture II, a Pennsylvania          Atlantic American Land Development, Inc. -
general partnership                          44.2617%

                                             AAPOP 1, LP - GP - 55.7383%

- -------------------------------------------- -----------------------------------------------
IR Northlight II Associates, a               AAPOP 2, LP -- GP - 50%
Pennsylvania general partnership
                                             BOP -- GP - 50%
23-2926116

- -------------------------------------------- -----------------------------------------------
Plymouth TFC, General Partnership, a         Brandywine P.M. LP -- GP - 50%
Pennsylvania general partnership
                                             WOP -- 50%


- -------------------------------------------- -----------------------------------------------


- -------------------------------------------- -----------------------------------------------
          CORPORATE SUBSIDIARIES                              SHAREHOLDERS

- -------------------------------------------- -----------------------------------------------
AAP Sub One, Inc., a Delaware corporation    Atlantic American Properties Trust  - 100%


- -------------------------------------------- -----------------------------------------------
Atlantic American Land Development, Inc.,    AAPOP 1, LP - 100%
a Delaware corporation


- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
          CORPORATE SUBSIDIARIES                              SHAREHOLDERS

- -------------------------------------------- -----------------------------------------------
                                          
Brandywine Grande B Corp., a Delaware        BRT -- 100%
corporation


- -------------------------------------------- -----------------------------------------------
Brandywine Grande C Corp., a Delaware        BRT 100%
corporation


- -------------------------------------------- -----------------------------------------------
Brandywine Holdings, I, Inc., a              BRT -- 100%
Pennsylvania corporation


- -------------------------------------------- -----------------------------------------------
Brandywine Realty Services Corporation, a    BOP -- 9,500 Common Shares
Pennsylvania corporation
                                             BRSP(8) -- 500 Common Shares


- -------------------------------------------- -----------------------------------------------
BTRS, Inc., a Delaware corporation           BOP - 100%

- -------------------------------------------- -----------------------------------------------
Southpoint Land Holdings, Inc., a            BOP -- 89 Shares
Pennsylvania corporation(7)
                                             Prentiss - 11 Shares

- -------------------------------------------- -----------------------------------------------
Valleybrooke Land Holdings, Inc., a          BOP -- 89 Shares
Pennsylvania corporation(7)
                                             Prentiss - 11 Shares

- -------------------------------------------- -----------------------------------------------


- -------------------------------------------- ------------------------------------------------
        LIMITED LIABILITY COMPANY
              SUBSIDIARIES                                      MEMBERS

- -------------------------------------------- ------------------------------------------------
Brandywine Ambassador, L.L.C., a             BOP - 100%
Pennsylvania limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Axinn I, LLC, a Delaware          BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------








- -------------------------------------------- ------------------------------------------------
        LIMITED LIABILITY COMPANY
              SUBSIDIARIES                                      MEMBERS

- -------------------------------------------- ------------------------------------------------
                                          
Brandywine Axinn II, LLC, a Delaware         BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Brokerage Services, LLC, a New    BRSCO - - 100%
Jersey limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Charlottesville LLC, a Virginia   BOP - 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Christina LLC, a Delaware         BOP - 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Croton, LLC, a Pennsylvania       Brandywine Grande B, L.P. - 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Dabney, L.L.C., a Delaware        BOP -- 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Dominion, L.L.C., a               BOP -- 100%
Pennsylvania limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine F.C., L.L.C., a Pennsylvania      BOP -- 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine I.S., L.L.C., a Pennsylvania      BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Interstate 50,  L.L.C., a         BOP -- 100%
Delaware limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine - Main Street, LLC, a Delaware    BOP -- 99%
limited liability company
                                             Brandywine Acquisitions, LLC -- 1%

- -------------------------------------------- ------------------------------------------------
Brandywine Metroplex LLC., a Pennsylvania    BOP - 100%
limited liability company

- -------------------------------------------- ------------------------------------------------








- -------------------------------------------- ------------------------------------------------
        LIMITED LIABILITY COMPANY
              SUBSIDIARIES                                      MEMBERS

- -------------------------------------------- ------------------------------------------------
                                          
Brandywine Norriton, L.L.C., a               BOP -- 99%
Pennsylvania limited liability company
                                             Norriton Corp. -- 1%

- -------------------------------------------- ------------------------------------------------
Brandywine P.M., L.L.C., a Pennsylvania      BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Piazza, L.L.C., a New Jersey      BOP -- 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Plaza 1000, L.L.C., a New         BOP -- 100%
Jersey limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine Promenade, L.L.C., a New Jersey   BOP -- 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine TB Florig, LLC, a Pennsylvania    BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine TB Inn, L.L.C., a Pennsylvania    BOP - 100%
limited liability company

- -------------------------------------------- ------------------------------------------------
Brandywine TB I, L.L.C., a Pennsylvania      BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine TB II, L.L.C., a Pennsylvania     BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine TB V, L.L.C., a Pennsylvania      BOP -- 100%
limited liability company
- -------------------------------------------- ------------------------------------------------
Brandywine TB VI, L.L.C., a Pennsylvania     BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------








- -------------------------------------------- ------------------------------------------------
        LIMITED LIABILITY COMPANY
              SUBSIDIARIES                                      MEMBERS

- -------------------------------------------- ------------------------------------------------
                                          
Brandywine TB VIII, L.L.C., a Pennsylvania   BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Trenton Urban Renewal, L.L.C.,    BOP - BRT
a Delaware limited liability company


- -------------------------------------------- ------------------------------------------------
Brandywine Witmer, L.L.C., a Pennsylvania    BOP -- 100%
limited liability company


- -------------------------------------------- ------------------------------------------------
Christiana Center Operating Company I LLC,   BOP -- Member - 100%
a Delaware limited liability company


- -------------------------------------------- ------------------------------------------------
Christiana Center Operating Company II       BOP -- Member - 100% LLC,
a Delaware limited liability company


- -------------------------------------------- ------------------------------------------------
Christiana Center Operating Company III      BOP -- Member - 100% LLC,
a Delaware limited liability company


- -------------------------------------------- ------------------------------------------------
e-Tenants LLC, a Delaware limited            e-Tenants.com Holding, L.P.
liability company

- -------------------------------------------- ------------------------------------------------


- -------------------------------------------- -----------------------------------------------
              JOINT VENTURES                          BRANDYWINE MEMBERS/PARTNERS

- -------------------------------------------- -----------------------------------------------
Brandywine Industrial Partnership, L.P., a   BB&K GP, BB&K LP Business Trust, BOP and
Delaware limited partnership                 Nichols Lansdale Limited Partnership III
- -------------------------------------------- -----------------------------------------------








- -------------------------------------------- -----------------------------------------------
              JOINT VENTURES                          BRANDYWINE MEMBERS/PARTNERS

- -------------------------------------------- -----------------------------------------------
                                          
1000 Chesterbrook Boulevard Partnership, a   Brandywine Dominion, LP -- GP - 50%
Pennsylvania general partnership


- -------------------------------------------- -----------------------------------------------
PJP Building Two, L.C., a Virginia limited   Brandywine Charlottesville, LLC -- 30%
liability company
                                             Pavilion Holdings, LLC -- 20%

                                             Worrell Land Development Company, L.C. f/k/a

                                             Worrell Land and Cattle Company, L.C. -- 50%

- -------------------------------------------- -----------------------------------------------
PJP Building Five, L.C., a Virginia          Brandywine Charlottesville, LLC -- 25%
limited liability company
                                             Pavilion Holdings, LLC -- 25%

                                             Worrell Land and Development Company, L.C. --
                                             50%

- -------------------------------------------- -----------------------------------------------
Two Tower Bridge Associates, a               Brandywine TB II, LP -- GP - 35%
Pennsylvania limited partnership

- -------------------------------------------- -----------------------------------------------
Four Tower Bridge Associates, a              Brandywine TB I, LP -- GP - 65%
Pennsylvania limited partnership

- -------------------------------------------- -----------------------------------------------
Five Oliver/Brandywine Partner, L.P., a      Brandywine TB V, L.P. -- GP - 50%
Pennsylvania Limited Partnership
                                             Five Oliver Tower Associates -- GP - 49%

                                             Donald W. Pulver -- LP - 1%

- -------------------------------------------- -----------------------------------------------
Five Tower Bridge Associates, a              Five Oliver/Brandywine Partner, L.P. -- LP
Pennsylvania limited partnership             -- 30%

- -------------------------------------------- -----------------------------------------------
Six Tower Bridge Associates, a               Brandywine TB VI, LP -- GP - 65%
Pennsylvania limited partnership

- -------------------------------------------- -----------------------------------------------







- -------------------------------------------- -----------------------------------------------
              JOINT VENTURES                          BRANDYWINE MEMBERS/PARTNERS

- -------------------------------------------- -----------------------------------------------
                                          
Eight Tower Bridge Development Associates,   Eight Oliver/Brandywine Partner, L.P. -- GP --
a Pennsylvania limited partnership           11% [A BRT subsidiary, Brandywine TB VIII,
                                             L.P., is a 50% limited partner in this entity.]

                                             Eight Tower Bridge - VEF II, LLC -- LP -- 89%


- -------------------------------------------- -----------------------------------------------
Tower Bridge Inn Associates, a               Brandywine TB Inn, L.P.-- GP - 50%
Pennsylvania limited partnership
                                             Oliver Tower Inn Associates -- GP - 23.1829%

                                             Tower Bridge Partners -- LP - 23.1889%

                                             Centre Consho, LLC -- LP - 3.6222%

- -------------------------------------------- -----------------------------------------------




- -------------------------------------------- -----------------------------------------------
                CONDOMINIUM                                   UNIT OWNERS

- -------------------------------------------- -----------------------------------------------
Allendale Road Corporate Center, a           BOP owns all units
Pennsylvania Condominium Association

- -------------------------------------------- -----------------------------------------------
Greentree Executive Campus 1001-03           BOP owns 2 units
Association, Inc., a New Jersey non-profit
corporation                                  1001 Greentree Associates, L.L.C. owns 1 Unit.

- -------------------------------------------- -----------------------------------------------
Princeton Pike V, VI & VII Condominium       BOP owns all units
Association, Inc., a New Jersey condominium
association

- -------------------------------------------- -----------------------------------------------


- -------------------------------------------- ------------------------------------------------
                   TRUST                                        TRUSTEES

- -------------------------------------------- -----------------------------------------------
Atlantic American Properties Trust, a        BOP -- Common Shares - 100%
Maryland real estate investment trust
                                             100 BRT Employees -- Preferred Shares - 100%

- -------------------------------------------- -----------------------------------------------


- -------------------------------------------- -------------------------------------------------
                   PARENT                                        TRUSTEES
- -------------------------------------------- -------------------------------------------------
Brandywine Realty Trust, a Maryland

real estate investment trust
- -------------------------------------------- -------------------------------------------------







(1)      Brandywine Operating Partnership, LP, referred to as "BOP," is a
         Delaware limited partnership.

(2)      Per BOP Unit Registry.

(3)      Witmer Operating Partnership I, L.P., referred to as "WOP," is a
         Delaware limited partnership.

(4)      The minority interest in these entities is subject to put/call rights
         under which BOP will ultimately acquire the minority interests.





                                   SCHEDULE II
                                   -----------

                            List of Options, Warrants
                        and Other Convertible Securities

                                     Options
                                     -------


- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Name                            Date of Grant                Exercise Price               Ending Balance
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
                                                                                 
Axinn, Don                      10/6/98                      24.00                        50,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Axinn, Don                      10/6/98                      26.40                        50,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     100,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   1/2/98                       25.25                        6,587
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   7/1/99                       25.25                        3,297
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   1/2/98                       27.78                        7,708
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   7/1/99                       27.78                        3,857
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   1/2/98                       29.04                        8,314
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Devuono, Jeff                   7/1/99                       29.04                        4,161
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     33,924
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Griffith, Jr., Al               1/2/98                       27.78                        2,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     2,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Hamer, Mark                     10/6/98                      24.00                        50,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Hamer, Mark                     10/6/98                      26.40                        50,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     100,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Martin, Tim                     1/2/98                       27.78                        7,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     7,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
McCawley, Joe                   1/2/98                       27.78                        5,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     5,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Molotsky, Brad                  7/1/99                       25.25                        6,594
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Molotsky, Brad                  1/2/98                       27.78                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Molotsky, Brad                  7/1/99                       27.78                        7,715
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Molotsky, Brad                  1/2/98                       29.04                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Molotsky, Brad                  7/1/99                       29.04                        8,322
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     47,631
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Jr., Tony              1/2/98                       25.25                        19,792
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Jr., Tony              1/2/98                       29.04                        23,159
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Jr., Tony              1/2/98                       29.04                        24,944
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     67,895
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Sr., Tony              1/2/98                       25.25                        197,923
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Sr., Tony              1/2/98                       27.78                        231,597
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Nichols, Sr., Tony              1/2/98                       29.04                        249,438
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     678,958
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Redd, William                   6/1/99                       25.25                        6,726
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Redd, William                   6/1/99                       27.78                        7,870
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Redd, William                   6/1/99                       29.04                        8,489
- ------------------------------- ---------------------------- ---------------------------- ----------------------------








- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Name                            Date of Grant                Exercise Price               Ending Balance
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
                                                                                 
Total                                                                                     23,085
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Rimikis, Tony                   7/1/99                       25.25                        6,594
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Rimikis, Tony                   1/2/98                       27.78                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Rimikis, Tony                   7/1/99                       27.78                        7,715
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Rimikis, Tony                   1/2/98                       29.04                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Rimikis, Tony                   7/1/99                       29.04                        8,322
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     47,631
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Shadowen, Leon                  6/1/99                       25.25                        6,726
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Shadowen, Leon                  6/1/99                       27.78                        7,870
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Shadowen, Leon                  6/1/99                       29.04                        8,489
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     23,085
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sowa, George                    7/1/99                       25.25                        6,594
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sowa, George                    7/1/99                       27.78                        7,715
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sowa, George                    7/1/99                       29.04                        8,322
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     22,631
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  8/8/94                       6.21                         13,333
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  8/8/94                       14.31                        33,334
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  7/25/02                      19.50                        100,000
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  1/2/98                       25.25                        296,736
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  1/2/98                       27.78                        347,222
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Sweeney, Jerry                  1/2/98                       29.04                        374,531
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     1,165,156
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Yamarick, Barbara               7/1/99                       25.25                        6,594
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Yamarick, Barbara               1/2/98                       27.78                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Yamarick, Barbara               7/1/99                       27.78                        7,715
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Yamarick, Barbara               1/2/98                       29.04                        12,500
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Yamarick, Barbara               7/1/99                       29.04                        8,322
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Total                                                                                     47,631
- ------------------------------- ---------------------------- ---------------------------- ----------------------------
Grand Total                                                                               2,372,627
- ------------------------------- ---------------------------- ---------------------------- ----------------------------



                                    WARRANTS
                                    --------


- ------------------------------------------------------------ ---------------------------------------------------------
Name                                                         Number of Underlying Common Shares

- ------------------------------------------------------------ ---------------------------------------------------------
                                                          
Five Arrows Realty Securities L.L.C.                         500,000
- ------------------------------------------------------------ ---------------------------------------------------------
Total
- ------------------------------------------------------------ ---------------------------------------------------------





                                      UNITS
                                      -----


- ----------------------------------------------------------------------------------------------------------------------
                              Totals for All Units

- ----------------------------------------------------------------------------------------------------------------------
                                                                      
Total General Partnership Units Outstanding:                             35,121,101
- ------------------------------------------------------------------------ ---------------------------------------------
Total Class A Limited Partnership Units Outstanding:                     2,340,212
- ------------------------------------------------------------------------ ---------------------------------------------
         Total Class A Units to BRT                                      603,005
- ------------------------------------------------------------------------ ---------------------------------------------
         Total Class A Units to Holdings I                               5
- ------------------------------------------------------------------------ ---------------------------------------------
         Total Class A Units to outside limited partners                 1,737,202
- ------------------------------------------------------------------------ ---------------------------------------------
Total Reserved Units for redemption/conversion of Series A Preferred     1,415,094 Units
Mirror Units:
- ------------------------------------------------------------------------ ---------------------------------------------
Total Reserved Units for redemption conversion of Series B Preferred     3,679,245 Units
Units:
- ------------------------------------------------------------------------ ---------------------------------------------
Total Series A Preferred Mirror Units Outstanding:                       750,000 Units
- ------------------------------------------------------------------------ ---------------------------------------------
Total Series B Preferred Units Outstanding                               1,950,000 Units
- ------------------------------------------------------------------------ ---------------------------------------------
Total Series C Preferred Mirror Units Outstanding:                       4,375,000 Units
- ------------------------------------------------------------------------ ---------------------------------------------



                                      OTHER
                                      -----


         Partners in 1000 Chesterbrook Boulevard Partnership have the right,
under certain circumstances, to have the partnership interests valued and to
convert these interests into Class A Units of Brandywine Operating Partnership,
L.P.








                                    EXHIBIT A
                                    ---------

         1.     The Company is a real estate investment trust duly formed and
existing under and by virtue of the laws of the State of Maryland and is in good
standing under the laws of the State of Maryland, including with the State
Department of Assessments and Taxation of Maryland. The Company has the full
trust power and authority to own, lease and operate its properties and to
conduct its business as described in the Registration Statement and the
Prospectus and is duly registered and qualified to conduct its business and is
in good standing in each jurisdiction or place where the nature of its
properties or the conduct of its business as described in the Registration
Statement and the Prospectus requires such registration or qualification, except
where the failure to so qualify would not have a material adverse effect on the
condition (financial or otherwise), business, prospects, properties or earnings
of the Company.

         2.     Each of the Subsidiaries is a corporation, limited liability
company, limited partnership or general partnership duly incorporated or formed,
as the case may be, validly existing and in good standing, as the case may be,
under the laws of its jurisdiction of incorporation or formation, with full
corporate, limited liability company, or partnership power and authority, as the
case may be, to own, lease, and operate its properties and to conduct its
business as described in the Registration Statement and the Prospectus, and is
duly registered and qualified to conduct its business in each jurisdiction or
place where the nature of its properties or the conduct of its business as
described in the Registration Statement and the Prospectus requires such
registration or qualification, except where the failure to so qualify would not
have a material adverse effect on the condition (financial or otherwise),
business, prospects, properties or earnings of such Subsidiary.

         3.     The authorized beneficial interest of the Company (including,
but not limited to, any options, warrants or other securities convertible into
or exchangeable shares of beneficial interest of the Company) is as set forth in
the Registration Statement and the Prospectus Supplement, and the Shares conform
in all material respects to the description thereof in the Registration
Statement and the Prospectus Supplement. All the outstanding shares of
beneficial interest of the Company outstanding prior to the issuance of the
Shares have been duly and validly authorized and issued, are fully paid and
nonassessable, and are free of any preemptive or other rights to subscribe for
the Shares under Maryland law.

         4.     The Shares have been duly and validly authorized and, when
issued and delivered to the Underwriter against payment therefor in accordance
with the terms of the Agreement, will be validly issued, fully paid and
nonassessable and free of any preemptive or other rights to subscribe for the
Shares under Maryland law.

         5.     To our knowledge after due inquiry, except as set forth on
Schedule I to the Officer's Certificate, there are no outstanding options,
warrants or other rights to purchase, calling for the issuance of, or any
commitment, plan or arrangement to issue, any shares of beneficial interest of
the Company or any security or other right or obligation convertible into or
exchangeable or exercisable for shares of beneficial interest of the Company.






There is no holder of any security of the Company or any other person who has
the statutory right or, to our knowledge, the contractual or other right, to
cause the Company to sell or otherwise issue to him, or to permit him to
underwrite the sale of, the Shares or the right to have any Common Shares or
other securities of the Company included in the Registration Statement or the
right, as a result of the filing of the Registration Statement or sale of the
Shares as provided in the Agreement, to require registration under the Act of
any Common Shares or other securities of the Company.

         6.     All of the outstanding units of limited and general
partnership interests of the Operating Partnership (the "Units"), and the
partnership and membership interests in each of the other Subsidiaries that is a
partnership or limited liability company, as the case may be, were created under
the agreements forming the Operating Partnership and such other Subsidiaries, as
the case may be, and all of the issued and outstanding shares of capital stock
of each of the Subsidiaries that is a corporation have been duly authorized and
validly issued, and are fully paid and nonassessable. To our knowledge after due
inquiry, except as described in the Registration Statement and the Prospectus
(or any amendment or supplement thereto) or Schedule II to the Officer's
Certificate, all such Units, partnership interests and shares of capital stock
are owned by the Company directly, or indirectly through one of the
Subsidiaries, free and clear of any security interest, lien, adverse claim,
equity or other encumbrance, and, to our knowledge after due inquiry, the
Company's ownership interest in the Operating Partnership, and the Company's and
the Operating Partnership's respective ownership interest in each of the
Subsidiaries, is as set forth on Schedule II attached hereto (without giving
effect to the issuance of the Shares). Except as described in the Registration
Statement and the Prospectus (or any amendment or supplement thereto), there are
no outstanding options, warrants or other rights to purchase, calling for the
issuance of, or any commitment, plan or arrangement to issue, any equity
interests in any Subsidiary, or any security or other right or obligation
convertible into or exchangeable or exercisable for any such interests in any
such Subsidiary. The terms of the Units conform in all material respects to
statements and descriptions thereof contained in the Registration Statement and
the Prospectus. The Company is the sole general partner of the Operating
Partnership. The Subsidiaries set forth on Schedule II attached hereto include
all of the "significant subsidiaries" of the Company, as such term is defined by
Rule 1-02 of Regulation S-X.

         7.     The Company has the full trust power and authority, and the
Operating Partnership has the requisite partnership power and authority, to
enter into the Agreement, and in the case of the Company, to issue, sell and
deliver the Shares to the Underwriter as provided in the Agreement, and the
Agreement has been duly and validly authorized, executed and delivered by the
Company and the Operating Partnership, as applicable, and is the legal, valid
and binding agreement of each of the Company and the Operating Partnership, as
applicable, enforceable against them in accordance with its terms.





         8.     The form of certificate representing the Common Shares is in
due and proper form and complies in all material respects with all applicable
Maryland statutory requirements.

         9.     To our knowledge after due inquiry, neither the Company nor
any of the Subsidiaries is in violation of its respective Declaration of Trust,
certificate or articles of incorporation or bylaws, partnership agreement,
operating agreement or other organizational documents or is in default in the
performance of any material obligation, agreement or condition contained in any
bond, debenture, note or other evidence of indebtedness.

         10.     With respect to the Company and the Subsidiaries, neither the
offer, sale or delivery of the Shares, the execution, delivery or performance of
the Agreement, nor the consummation of the transactions contemplated thereby by
the Company or the Subsidiaries, as applicable: (i) required or requires, with
respect to the Company or the Subsidiaries, any consent, approval, authorization
or other order of, or registration or filing with, any court, regulatory body,
administrative agency or other governmental body, agency or official, or the New
York Stock Exchange (except (a) such as has been made or obtained and (b) as to
state securities or Blue Sky laws, as to which we express no opinion); (ii)
conflicted with or conflicts with, constituted or constitutes, or resulted in or
results in, a breach or violation of, or a default under, the Declaration of
Trust, Articles Supplementary, certificate or articles of incorporation or
bylaws, partnership agreement or other organizational documents, of any of such
entities, or under any indenture, contract, lease, mortgage, deed of trust, note
agreement, loan agreement or other agreement, obligation, condition covenant or
instrument to which any of such entities is a party or by which any of them or
any of their respective properties or assets are bound or subject to; (iii)
violated or violates any statute, law, rule, regulation, judgment, injunction,
order or decree applicable to any of such entities or any of their respective
properties or assets; or (iv) resulted or will result in the creation or
imposition of any lien, charge or encumbrance upon the property or assets of any
of such entities pursuant to the terms of any agreement or instrument to which
any of them is a party or by which any of them may be bound or to which any of
the property or assets of any of them is subject.

         11.     Neither the Company nor any of the Subsidiaries is, and after
giving effect to the offering and sale of the Shares and the application of the
proceeds thereof as described in the Prospectus (and any amendment or supplement
thereto) will be, an "investment company" as defined in the Investment Company
Act of 1940, as amended.

         12.     To our knowledge after due inquiry, (i) there are no pending
or threatened actions, suits or proceedings against the Company or any of the
Subsidiaries or any of their respective trustees, directors or officers in their
capacity as such, or to which the Company or any of the Subsidiaries or any of
their respective trustees, directors or officers in their capacity as such, or
any of their respective properties or assets, is subject, that are of a





character which is required to be described in the Registration Statement or
Prospectus (or any amendment or supplement thereto) other than any that are
described or incorporated therein by reference and (ii) there are no agreements,
contracts, indentures, leases or other instruments that are required to be
described in the Registration Statement or the Prospectus (or any amendment or
supplement thereto) or to be filed as an exhibit to the Registration Statement
that are not described or filed as required by the Act.

         13.     The statements in the Registration Statement and Prospectus
Supplement set forth under the headings "Description of Shares of Beneficial
Interest", "Certain Provisions of Maryland Law and of our Declaration of Trust
and Bylaws" and "Federal Income Tax Considerations", and the statements in the
Company's Annual Report on Form 10-K for the year ended December 31, 2002 and
incorporated by reference in the Registration Statement under the heading "Risk
Factors--Our status as a REIT is dependent on compliance with federal income tax
requirements", to the extent they constitute matters of law or descriptions or
summaries of contracts, agreements or other legal documents, or refer to or
constitute statements of matters of law, descriptions of statutes, rules or
regulations, or legal conclusions, each, respectively, are accurate and fair
summaries of the information disclosed therein.

         14.     The Registration Statement has become effective under the Act
and any required filing of the Prospectus (or any amendment or supplement
thereto) pursuant to Rule 424(b) has been made in the manner and within the time
period required by Rule 424(b). To our knowledge, no stop order suspending the
effectiveness of the Registration Statement has been issued, no proceedings for
that purpose have been instituted or threatened and the Registration Statement
and the Prospectus (or any amendment or supplement thereto) (other than the
financial statements and other financial and statistical information contained
therein, as to which we express no opinion) comply as to form in all material
respects with the applicable requirements of the Act and the Exchange Act and
the respective rules thereunder. We have no reason to believe that on the
Effective Date or the date the Registration Statement was last deemed amended
the Registration Statement contained any untrue statement of a material fact or
omitted to state any material fact required to be stated therein or necessary to
make the statements therein not misleading or that the Prospectus as of its date
and on the Closing Date included or includes any untrue statement of a material
fact or omitted or omits to state a material fact necessary to make the
statements therein, in the light of the circumstances under which they were
made, not misleading (in each case, other than the financial statements and
other financial and statistical information contained therein, as to which we
express no opinion).

         15.     The Shares are duly listed, admitted and authorized for
trading on the New York Stock Exchange, subject to official notice of issuance.

         16.     The Company was organized in conformity with the requirements
for qualification as a REIT for federal income tax purposes, and, based on the
facts and assumptions set forth in the Prospectus (and any amendment or
supplement thereto) and certain representations by the Company regarding certain
federal income tax matters, its method of operation has enabled it, and its
proposed method of operation will enable it, to meet the requirements under the
Internal Revenue Code of 1986, as amended, for qualification and taxation as a
REIT.







                                    EXHIBIT B
                                    ---------



                            Form of Lock-Up Agreement
                            -------------------------



                      [Letterhead of officer or trustee of
                                  the Company]

                             Brandywine Realty Trust
                             -----------------------
                        Public Offering of Common Shares
                        --------------------------------

                                                                  June ___, 2003

Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

Ladies and Gentlemen:

         This letter is being delivered to you in connection with the proposed
Underwriting Agreement (the "Underwriting Agreement"), between Brandywine Realty
Trust, a real estate investment trust organized under the laws of Maryland (the
"Company"), Brandywine Operating Partnership, L.P., a Delaware limited
partnership, and you as the underwriter named therein (the "Underwriter"),
relating to an underwritten public offering of common shares of beneficial
interest, par value $.01 per share (the "Common Shares"), of the Company.

         In order to induce you to enter into the Underwriting Agreement, the
undersigned will not, without the prior written consent of the Underwriter,
offer, sell, contract to sell, pledge or otherwise dispose of, (or enter into
any transaction which is designed to, or might reasonably be expected to, result
in the disposition (whether by actual disposition or effective economic
disposition due to cash settlement or otherwise) by the undersigned or any
affiliate of the undersigned or any person in privity with the undersigned or
any affiliate of the undersigned), directly or indirectly, including the filing
(or participation in the filing) of a registration statement with the Securities
and Exchange Commission in respect of, or establish or increase a put equivalent
position or liquidate or decrease a call equivalent position within the meaning
of Section 16 of the Securities Exchange Act of 1934, as amended, and the rules
and regulations of the Securities and Exchange Commission promulgated thereunder
with respect to, any shares of beneficial interest in the Company or any
securities convertible into, or exercisable or exchangeable for such shares of
beneficial interest, or publicly announce an intention to effect any such
transaction, for a period of 45 days after the date of the Underwriting
Agreement, other than Common Shares disposed of as bona fide gifts approved by
the Underwriter.






                  If for any reason the Underwriting Agreement shall be
terminated prior to the Closing Date (as defined in the Underwriting Agreement),
the agreement set forth above shall likewise be terminated.



                                       Yours very truly,


                                       [Signature of officer or trustee]


                                       [Name and address of officer or trustee]